diff --git a/backup-tar/backup.sh b/backup-tar/backup.sh
index 9b003a1c81e97894a4e69a2c399b7e4ba34fbb86..f718e83f50d2d657396491eb55857292a903eee5 100755
--- a/backup-tar/backup.sh
+++ b/backup-tar/backup.sh
@@ -43,7 +43,7 @@ TIMESTAMP=$(date +"%Y-%m-%d")
 BACKUP_FILE=${TIMESTAMP}.${TYPE}.tar.xz
 INCFILE_TGT=stamps/${TIMESTAMP}.${TYPE}.snar
 INCFILE=${TIMESTAMP}.${TYPE}.snar
-INCFILE_TMP=${INCFILE_TMP}.tmp
+INCFILE_TMP=${INCFILE}.tmp
 
 INC_FILTER="."
 if [[ "$TYPE" = "weekly" ]]; then